What you'll find here is a cross between fluffy expansion on the settings that I enjoy and the crunchy mechanics of the various rule systems. Game mechanics will cover anything from classes, races, feats, and/or skills. Check how an article is tagged to see if it's for the system you're looking for. It might not be, but can hopefully be adapted easily.

Undead Slayers are an elite group of Atlantean warriors dedicated to destroying supernatural evil in all its forms. These knights-errant travel, often to other dimensions and worlds, protecting the innocent and freeing those enslaved by vampires and other powerful creatures of darkness.

Some settings, particularly those in the dark fantasy and horror genres, have depraved mages and ritualists who draw power from blood. The blood trapping is used only by evil necromancers and blood cultists who wish to invoke fear and panic in onlookers.

When working on my Savage Rifts campaign and coming up with new frameworks and critters, I try to re-use elements which others have already created and are available, rather than re-invent the wheel. To that end, I've begun compiling a list of mechanics, particularly Edges, from other settings and supplements which I find work well in Savage Rifts.

The England of Rifts Earth is home to a number of ancient orders, including those who selflessly care for the woodland homes and Millennium Trees which grow in many of the old forests. These woodland druids are skilled with creating salves and potions from the bounty the forest has to offer.

Tattooed men, or T-men, are warriors imbued with superhuman abilities granted by a special form of magic. A T-man may access any powers (including Mega Powers), while others confer specific abilities or protections instead rather than powers. Most T-men are covered in at least six unique mystic tattoos, though experienced and battle-hardened warriors may have many more.